I am using a proxy to navigate on internet, and I am trying to setup a firewall that will only let me connect to internet via this proxy:
if I forgot to turn on the proxy, that I should not be able ...

I have Lubuntu 14.04 LTS with vsftpd and the lamp stack (apache2, etc.) installed. Everything works fine on the LAN. Externally, the services don't acknowledge connection attempts. I can see packets ...

I'm trying to secure my internet browsing. I just reinstalled Xubuntu 14.04 and GUFW firewall. I have 8 UDP ports open. I don't understand why. The software I currently have open are Firefox, GUFW, ...

I try to hardening my server. For doing so, I got a general question: Should I install kernel security patches like selinux and an Anti-Virus with Intrusion Detection Firewall? Does it make sense to ...

We need to open the necessary ports for Google Hangout VIDEO Conferencing in our firewall. Unfortunately my netmon trace shows Port 51355 and 51336 to be active; which is not at all what the Google ...

I want to send all packets that pass my firewall device to logging server to inspect contents of passing packets on my logging server. It seems like my device doesn't support that feature explicitly ...

I have a VPS where I changed the SSH port from the default 22. Unfortunately I forgot to allow the new port through the firewall. I don't have physical access to the server, and my host does not seem ...

In a CentOS 7 web server, how do I configure firewalld to block all but a specific list of ip addresses from making successful http or https requests?
I know that I can use httpd.conf to restrict by ...

I am new to virt-manager.
After having configured a virtual network (new interface virbr0) with 2 VMs that should be able to communicate, I discovered that most ports are filtered.
For example, the ...

any and all help is appreciated.
I am trying to set up my Network Map Can you give me advice in setting up my interface file? If I set a static IP on my PLC on the same gateway, I shouldn't need to ...

Today I launched a vps with Debian 7 x64 and started playing around with it.
I installed xampp as well as knock daemon to get my hands dirty. So, all I wanted to do was to actually block all requests ...

I tried to install ASSP (Anti-Spam SMTP Proxy Server),but when I try to start it I get the following:
$ perl assp.pl
Perl version 5.012003 (5.12.3) is at least recommended to run ASSP 2.4.3
(14313) ...

I have a centos machine and I am trying install some dependencies using yum. When I do this I keep getting a message saying the host cannot be resolved. I was told the previous person that used the ...

I have a Raspberry Pi running Linux (Raspbian) which is connected to my corporate Internet over an Ethernet cable. The RPi also has a wifi adaptor plugged into a USB port. I've been following along ...

I have a unique situation. Let's say my webserver ( e.g. 10.0.0.2) is connected to eth0 of my firewall (gw 10.0.0.1). A local network (192.168.0.0/24) is also connected to eth1 (192.168.0.1/24) of my ...